Share Email Print

Proceedings Paper

Active spectrographs: a new way to improve their quality
Author(s): Rajiv K. Bhatia
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We discuss the various errors affecting an astronomical spectrograph, whether mounted directly at the telescope, or placed on a table. We then propose a method for measuring these errors, using the Shack-Hartmann principle, which has been successfully used in the field of active and adaptive optics. It is argued that such a measurement can be used to correct the aberrations on-line, leading to considerable improvement in the performance of the spectrographs, as well as leading to much reduced costs.

Paper Details

Date Published: 1 June 1994
PDF: 5 pages
Proc. SPIE 2198, Instrumentation in Astronomy VIII, (1 June 1994); doi: 10.1117/12.176686
Show Author Affiliations
Rajiv K. Bhatia, Telescopio Nazionale Galileo/Osservatorio Astronomico di Padova (Italy)

Published in SPIE Proceedings Vol. 2198:
Instrumentation in Astronomy VIII
David L. Crawford; Eric R. Craine, Editor(s)

© SPIE. Terms of Use
Back to Top